Results 101 to 110 of about 1,415 (183)

Bulk and Atmospheric Metallicities as Direct Probes of Sequentially Varying Accretion Mechanisms of Gas and Solids Onto Planets

The Astrophysical Journal Letters
Core accretion is the standard scenario of planet formation, wherein planets are formed by sequential accretion of gas and solids, and is widely used to interpret exoplanet observations.
Yasuhiro Hasegawa, Mark R. Swain
doaj   +1 more source

The formation history of giant planets seen through multiple elemental ratios

, 2022
Comparative studies of protoplanetary disks, exoplanetary systems, and the Solar System reveal the presence of giant planets over a wide range of orbital radii, spanning from 0.01 to 100 au from the host star.
Pacetti, Elenia, Schisano, Eugenio, Politi, Romolo, Turrini, Diego, Molinari, Sergio, Fonte, Sergio   +5 more
core  

The Prevalence of Distant Giant Planets in the Presence of Close-In Small Planets [PDF]

One of the Solar System's most prominent characteristics is the division of its planets into two distinct groups. The terrestrial planets have short periods, low masses, and negligible atmospheres, while the gas and ice giants have wider separations and ...
Van Zandt, Judah
core  

Wind Shear and the Role of Eddy Vapor Transport in Driving Water Convection on Jupiter

The Planetary Science Journal
Recent observations of convection in the Jovian atmosphere have demonstrated that convection is strongly concentrated at specific locations on the planet.
Ramanakumar Sankar, Michael H. Wong, Csaba Palotai, Shawn Brueshaber   +3 more
doaj   +1 more source

An Energy Perspective of Core Erosion in Gas Giant Planets

The Astrophysical Journal Letters
Juno and Cassini have shown that Jupiter and Saturn likely contain extended gradients of heavy elements. Yet, how these gradients can survive over billions of years remains an open question.
J. R. Fuentes, Christopher R. Mankovich, Ankan Sur   +2 more
doaj   +1 more source

On the Origin of Jupiter’s Fuzzy Core: Constraints from N-body, Impact, and Evolution Simulations

The Astrophysical Journal
It has been suggested that Jupiter’s fuzzy core could be a result of a giant impact. Here, we investigate the expected impact conditions from N -body simulations. We then use state-of-the-art smoothed particle hydrodynamics simulations to investigate the
Thomas Meier, Christian Reinhardt, Sho Shibata, Simon Müller, Joachim Stadel, Ravit Helled   +5 more
doaj   +1 more source

3D Simulations of Convective Entrainment in Gas Giants: Rotation and Decreasing Luminosity as Barriers to Mixing

The Astrophysical Journal Letters
Observations from Juno and Cassini suggest that Jupiter and Saturn may possess fuzzy cores—central regions where the abundance of heavy elements varies smoothly with depth.
Shu Zhang, J. R. Fuentes, Andrew Cumming
doaj   +1 more source

Computational and experimental studies of solids in the ammonia-water system [PDF]

, 2004
This thesis reports the results of first-principles computational studies of thirteen crystalline structures in the H2O-NH3 system. This includes eight low- and highpressure polymorphs of pure water ice, two polymorphs of solid ammonia, and three low ...
Fortes, A, Fortes, Andrew, Fortes A D
core  

On the Origin and Dynamical Evolution of Jupiter’s Moon Amalthea

The Astrophysical Journal
Interior to the orbits of Jupiter’s iconic Galilean moons are four small satellites with individual mean radii R  ≲ 84 km. Multiple lines of evidence suggest that these bodies formed at a more distant location in Jupiter’s circumplanetary disk before ...
Ian R. Brunton, Konstantin Batygin
doaj   +1 more source

Formation and Early Evolution of Solar and Extra-Solar Giant Planets

, 2001
This project investigates the origin of giant planets, both in the Solar System and around other stars. It is assumed that the planets form by the core accretion process: small solid particles in a disk surrounding a young star gradually coagulate into ...
Boyce, Joseph, Bodenheimer, P. H., Hubickyj, Olenka   +2 more
core